If you are not already a registered user with Mapmandu, with the feature "Connect with Facebook", you will not have to register to participate as a user on Mapmandu. All you have to do is click on the "Connect with Facebook" button at the top right, below the search block. Once you click on the button, a pop-up page (you might have to enable pop-ups with your browser) will ask you for your Facebook login email and password. Mapmandu does not store your Facebook password.